APIRP553

-,-,-RefineryValvesandAccessoriesforControlandSafetyInstrumentedSystemsAPIRECOMMENDEDPRACTICE553SECONDEDITION,OCTOBER2012CopyrightAmericanPetroleumInstituteProvidedbyIHSunderlicensewithAPINoreproductionornetworkingpermittedwithoutlicensefromIHSLicensee=UniversityofTexasRevisedSubAccount/5620001114,User=dfefa,adfaNotforResale,05/28/201602:22:42MDT-,-,-CopyrightAmericanPetroleumInstituteProvidedbyIHSunderlicensewithAPINoreproductionornetworkingpermittedwithoutlicensefromIHSLicensee=UniversityofTexasRevisedSubAccount/5620001114,User=dfefa,adfaNotforResale,05/28/201602:22:42MDTRefineryValvesandAccessoriesforControlandSafetyInstrumentedSystemsDownstreamSegmentAPIRECOMMENDEDPRACTICE553SECONDEDITION,OCTOBER2012CopyrightAmericanPetroleumInstituteProvidedbyIHSunderlicensewithAPINoreproductionornetworkingpermittedwithoutlicensefromIHS-,-,-Licensee=UniversityofTexasRevisedSubAccount/5620001114,User=dfefa,adfaNotforResale,05/28/201602:22:42MDT-,-,-SpecialNotesAPIpublicationsnecessarilyaddressproblemsofageneralnature.Withrespecttoparticularcircumstances,local,state,andfederallawsandregulationsshouldbereviewed.NeitherAPInoranyofAPIsemployees,subcontractors,consultants,committees,orotherassigneesmakeanywarrantyorrepresentation,eitherexpressorimplied,withrespecttotheaccuracy,completeness,orusefulnessoftheinformationcontainedherein,orassumeanyliabilityorresponsibilityforanyuse,ortheresultsofsuchuse,ofanyinformationorprocessdisclosedinthispublication.NeitherAPInoranyofAPIsemployees,subcontractors,consultants,orotherassigneesrepresentthatuseofthispublicationwouldnotinfringeuponprivatelyownedrights.APIpublicationsmaybeusedbyanyonedesiringtodoso.EveryefforthasbeenmadebytheInstitutetoassuretheaccuracyandreliabilityofthedatacontainedinthem;however,theInstitutemakesnorepresentation,warranty,orguaranteeinconnectionwiththispublicationandherebyexpresslydisclaimsanyliabilityorresponsibilityforlossordamageresultingfromitsuseorfortheviolationofanyauthoritieshavingjurisdictionwithwhichthispublicationmayconflict.APIpublicationsarepublishedtofacilitatethebroadavailabilityofproven,soundengineeringandoperatingpractices.Thesepublicationsarenotintendedtoobviatetheneedforapplyingsoundengineeringjudgmentregardingwhenandwherethesepublicationsshouldbeutilized.TheformulationandpublicationofAPIpublicationsisnotintendedinanywaytoinhibitanyonefromusinganyotherpractices.AnymanufacturermarkingequipmentormaterialsinconformancewiththemarkingrequirementsofanAPIstandardissolelyresponsibleforcomplyingwithalltheapplicablerequirementsofthatstandard.APIdoesnotrepresent,warrant,orguaranteethatsuchproductsdoinfactconformtotheapplicableAPIstandard.UsersofthisStandardshouldnotrelyexclusivelyontheinformationcontainedinthisdocument.Soundbusiness,sci-entific,engineering,andsafetyjudgmentshouldbeusedinemployingtheinformationcontainedherein.Allrightsreserved.Nopartofthisworkmaybereproduced,translated,storedinaretrievalsystem,ortransmittedbyanymeans,electronic,mechanical,photocopying,recording,orotherwise,withoutpriorwrittenpermissionfromthepublisher.ContactthePublisher,APIPublishingServices,1220LStreet,NW,Washington,DC20005.Copyright2012AmericanPetroleumInstituteCopyrightAmericanPetroleumInstituteProvidedbyIHSunderlicensewithAPINoreproductionornetworkingpermittedwithoutlicensefromIHSLicensee=UniversityofTexasRevisedSubAccount/5620001114,User=dfefa,adfaNotforResale,05/28/201602:22:42MDT-,-,-ForewordNothingcontainedinanyAPIpublicationistobeconstruedasgrantinganyright,byimplicationorotherwise,forthemanufacture,sale,oruseofanymethod,apparatus,orproductcoveredbyletterspatent.Neithershouldanythingcontainedinthepublicationbeconstruedasinsuringanyoneagainstliabilityforinfringementofletterspatent.ThisdocumentwasproducedunderAPIstandardizationproceduresthatensureappropriatenotificationandparticipationinthedevelopmentalprocessandisdesignatedasanAPIstandard.QuestionsconcerningtheinterpretationofthecontentofthispublicationorcommentsandquestionsconcerningtheproceduresunderwhichthispublicationwasdevelopedshouldbedirectedinwritingtotheDirectorofStandards,AmericanPetroleumInstitute,1220LStreet,NW,Washington,DC20005.Requestsforpermissiontoreproduceortranslatealloranypartofthematerialpublishedhereinshouldalsobeaddressedtothedirector.Generally,APIstandardsarereviewedandrevised,reaffirmed,orwithdrawnatleasteveryfiveyears.Aone-timeextensionofuptotwoyearsmaybeaddedtothisreviewcycle.StatusofthepublicationcanbeascertainedfromtheAPIStandardsDepartment,telephone(202)682-8000.AcatalogofAPIpublicationsandmaterialsispublishedannuallybyAPI,1220LStreet,NW,Washington,DC20005.SuggestedrevisionsareinvitedandshouldbesubmittedtotheStandardsDepartment,API,1220LStreet,NW,Washington,DC20005,.iiiCopyrightAmericanPetroleumInstituteProvidedbyIHSunderlicensewithAPINoreproductionornetworkingpermittedwithoutlicensefromIHSLicensee=UniversityofTexasRevisedSubAccount/5620001114,User=dfefa,adfaNotforResale,05/28/201602:22:42MDT-,-,-CopyrightAmericanPetroleumInstituteProvidedbyIHSunderlicensewithAPINoreproductionornetworkingpermittedwithoutlicensefromIHSLicensee=UniversityofTexasRevisedSubAccount/5620001114,User=dfefa,adfaNotforResale,05/28/201602:22:42MDT-,-,-Contents1234.7PageScope.1NormativeReferences.1TermsandDefinitions.3ControlValves.8General.8ValveBody.8ValveActuators.23ValvePositioner.27Handwheels.29SwitchesandSolenoids.30VolumeBoosters/QuickExhaustVents/AirLocks.36.47.107.18.4SpecificCriteria.Globe-StyleValves.RotaryStyleValves.SpecialtyValvesHighPressureDropandParticleApplications.ControlValvePerformance.HighPerformanceControlValves.MaterialConsiderationsforControlValvesinRefiningProcesses.Installation/Inspection/Testing.Accessibility.Location.ControlValveManifolds.InspectionandTesting.RefineryApplications.Introduction.AtmosphericDistillation(Typical).VacuumDistillation(Typical).FluidCatalyticCracking(FCCU)(Typical).CatalyticReformer(Typical).Hydrocracker(Typical).Hydrotreater(Typical).DelayedCoker(Typical).GasPlant(Typical).AlkylationUnit(Typical).SulfurRecoveryUnit(Typical).EmergencyBlockValves.EBVGeneralInstallationGuidelines.ActuatorSelection.Fireproofing.ControlStations.32323335363839434343454547474753576569747882869094949596979SafetyInstrumentedSystem(SIS)Valves.9710VaporDepressurizingValves.10110.1General.10110.2DepressuringValvesandActuatorRequirements.102vCopyrightAmericanPetroleumInstituteProvidedbyIHSunderlicensewithAPINoreproductionornetworkingpermittedwithoutlicensefromIHSLicensee=UniversityofTexasRevisedSubAccount/5620001114,User=dfefa,adfaNotforResale,05/28/201602:22:42MDTContents111.411.511.611.711.8HydraulicSlideValveActuators.General.HydraulicPowerUnit(HPU).SlideValvePositionerSystems.InstrumentationRequired.PerformanceCharacteristics.ElectricalRequirements.TestingandInspection.SlideValveActuator